Here's why:
* Active voice: The subject is the doer of the action.
* Passive voice: The subject is the receiver of the action.
Example:
* Active: The dog chased the ball. (The dog is the subject and performs the action of chasing)
* Passive: The ball was chased by the dog. (The ball is the subject but receives the action of being chased)
Let me know if you'd like more examples!